The XB6 powered subwoofer features a large 12-inch Deep Channel woofer, BassTrac circuitry, and powerful amplifier in a vented enclosure. The XB6 has a 625 watts dynamic power output FTC-rated 200-watt amplifier. The XB6 has a frequency response (+/-3dB) of 29Hz-150Hz respectively. The volume control is mounted on top of the cabinet, flush with the surface, so the top remains perfectly flat.